give existing port_server time to respond

tools/run_tests/run_tests.py

@@ -1055,7 +1055,7 @@ def _start_port_server(port_server_port):
   try:
     version = int(urllib2.urlopen(
         'http://localhost:%d/version_number' % port_server_port,
-        timeout=1).read())
+        timeout=10).read())
     print 'detected port server running version %d' % version
     running = True
   except Exception as e: